<html>
<body>

<iframe id="reveal" src="../../index.html" style="border: 0;" width="500" height="500"></iframe>

<div>
    <input id="back" type="button" value="go back"/>
    <input id="ahead" type="button" value="go ahead"/>
    <input id="slideto" type="button" value="slideto 2-2"/>
</div>

<script>

    (function () {

        var back = document.getElementById('back'),
            ahead = document.getElementById('ahead'),
            slideto = document.getElementById('slideto'),
            reveal = window.frames[0];

        back.addEventListener('click', function () {

            reveal.postMessage(JSON.stringify({method: 'prev', args: []}), '*');
        }, false);

        ahead.addEventListener('click', function () {
            reveal.postMessage(JSON.stringify({method: 'next', args: []}), '*');
        }, false);

        slideto.addEventListener('click', function () {
            reveal.postMessage(JSON.stringify({method: 'slide', args: [2, 2]}), '*');
        }, false);

    }());

</script>

</body>
</html>
